SPEDAO 12s 10-50T 12 speed MTB Bicycle Cassette Steel Bike Freewheel fits SRAM XD Super Light CNC Made. 12 speed compatible with Sram XD freehubs. Compatible with: SRAM XD CASSETTE GX X01 XX1. Cheaper :the SPEDAO cassette price is only 25-40 of sram High cost performance.
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